In an experiment gone awry, Dr. Kintobor exposed Knothole Island to Chaos Emerald radiation, mistakenly believing the island to be uninhabited; the resultant effects mutated the Knothole Freedom Fighters and Chaotix who resided there into Godzilla-like monsters. In hopes of stopping this threat, he developed a Roboticization virus that would turn the creatures into immobile robots, succeeding with his Mobius's version of Charles Hedgehog. Over time, the creatures began developing an immunity to the virus, resulting in the cyborg Rabbot-Zilla. Only with the help of Sonic the Hedgehog, who had been brought by Zonic the Zone Cop, was the creature defeated. Afterwards, Kintobor modified the Giant Robotno battle machine to run on Sonic's speed, allowing Sonic to use it to retrieve a Chaos Emerald that Kintobor needed to power his other machines. In honor of the hero, Kintobor modeled the first of his new creations after Sonic. He also expressed great remorse at the news of what his counterpart in Sonic's universe, Dr. Robotnik, had done to that Mobius. (SSS: #12)